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Anzin-Saint-Aubin, France

Fuentes G.A.,PRiSM | Fuentes G.A.,Foundation University
11th AIAA Aviation Technology, Integration,and Operations (ATIO) Conference, including the AIAA Balloon Systems Conference and 19th AIAA Lighter-Than-Air Technology Conference | Year: 2011

New conflicts around the world have once more created the need for an effective light attack, close air support aircraft that can in a very short notice provide effective support through pinpoint attacks with overwhelming firepower without putting friendly troops in danger. The recent resurgence of the need for this type of airplane also created the need for a lower cost yet effective option to today's high performance legacy aircraft such as the Fairchild Republic A-10 Thunderbolt II and the Lockheed Martin F-16 Viper; these aircraft are effective today in their intended roles, however they are significantly more costly to operate compared with lower cost turboprops or even turbofan aircraft that may be able to perform the light attack/close air support mission. This paper examines the key factors that need to be taken into account to design a more effective aircraft fulfilling this mission while keeping costs as low as possible with today's technology. © 2011 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved. Source


Giraldo A.F.,Research Group in Aerospace science GICA | Giraldo A.F.,University of San Buenaventura | Parra J.E.,Research Group in Aerospace science GICA | Parra J.E.,National University of Colombia | And 6 more authors.
51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 | Year: 2013

The main purpose of this paper is to present an initial conceptual design of a turbo-prop aircraft, capable of carrying ninety passengers on regional flights, following the methods proposed by Dr. Jan Roskam. Presently, the turboprop market is moving in the direction of this type of aircraft as part of a need for greater passenger capacity. The design was based on existing technology as part of an initial research study at Liberators University. This configuration is called the "stylized" as a more efficient and optimized solution to today's turboprop aircraft in the commercial market. © 2013 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved. Source


Anciaux N.,French Institute for Research in Computer Science and Automation | Bouganim L.,French Institute for Research in Computer Science and Automation | Delot T.,French Institute for Research in Computer Science and Automation | Delot T.,University of Valenciennes and HainautCambresis | And 4 more authors.
SIGMOD Record | Year: 2014

According to many studies, IT should become a key facilitator in establishing primary education, reducing mortality or supporting commercial initiatives in Least Developed Countries. The main barrier to the development of IT services in these regions is not only the lack of communication facilities, but also the lack of consistent information systems, security procedures, economic and legal support, as well as political commitment. In this paper, we propose the vision of an infrastructure-less data platform well suited for the development of innovative IT services in Least Developed Countries. We propose a participatory approach, called Folk-IS, where each individual implements a small subset of a complete information system thanks to highly secure, portable and low-cost personal devices as well as opportunistic networking, without the need for any form of infrastructure. In this paper, we focus on the exploitation and feasibility analysis of the Folk-IS vision. We also review the technical challenges that are specific to this approach. Source


Anciaux N.,French Institute for Research in Computer Science and Automation | Bouganim L.,French Institute for Research in Computer Science and Automation | Delot T.,French Institute for Research in Computer Science and Automation | Delot T.,University of Valenciennes and HainautCambresis | And 4 more authors.
Proceedings of the VLDB Endowment | Year: 2014

According to a wide range of studies, IT should become a key facilitator in establishing primary education, reducing mortality and supporting commercial initiatives in Least Developed Countries (LDCs). The main barrier to the development of IT services in these regions is not only the lack of communication facilities, but also the lack of consistent information systems, security procedures, economic and legal support, as well as political commitment. In this paper, we propose the vision of an infrastructureless data platform well suited for the development of innovative IT services in LDCs. We propose a participatory approach, where each individual implements a small subset of a complete information system thanks to highly secure, portable and low-cost personal devices as well as opportunistic networking, without the need of any form of infrastructure. We review the technical challenges that are specific to this approach. © 2014 VLDB Endowment. Source


Boussaton O.,Cortex Inc. | Cohen J.,PRiSM | Tomasik J.,Supelec | Barth D.,PRiSM
NetGCoop 2012 - 6th International Conference on Network Games, Control and Optimization | Year: 2012

Route selection is one of the key problems to be treated in telecommunication management and control. We are interested in finding the routes which are balanced from the congestion or cost point of view. The 'classical' load balancing concerns an entire route, from its source node to its destination, which is selected according to its cost. This approach requires therefore the analysis of all existing routes whose number in a graph is exponential in function of the network size. This phenomenon makes a game on path level (macroscopic level) unrealistic. Our goal is to propose an algorithm which can find Nash equilibria by examining a polynomial number of graph network elements. Our main idea consists in choosing an outgoing arc in each node in exception of the destination (microscopic level) instead of an entire path. We achive this by proposing a distributed algorithm which performs this selection in network nodes. We provide the analysis which proves that our algorithm converges weakly to Nash equilibria. The computation results are encouraging to continue the purely numerical work on the algorithm implementation. © 2012 Univ of Avignon. Source

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